Apparatus for forming enclosed blanket insulation strips



2 SHEETS- SHEET l N m m Tw. N NG R WM. m NM o NM o ma ,f A Nq n %\n.,\\ u Ns u wm w NN Nk Nk W June 10, 1952 M G|| MAN APPARATUS FYOR FORMING ENCLOSED BLANKET INSULATION STRIPS Filed April l, 1948 a A J June l0, 1952 l.. M. GILMAN A 2,599,625 APPARATUS FOR FORMING ENCLOSED BLANKET INSULATION STRIPS Filed April l, 1948 2 SIIEETS--SHEET 2 ATTORNEYS Patented June 10, 1952 APBARATUS FQRFORMJNG ENGLQSEU `Ermittler INSULATION s'rntesf Lawrenceflll. Gilman, Gilman, Conn'. `mistica:ifmAprili, 1948,-.seriat-No-1t 1f elaine. (el. 15a-:ail

A The4 present invention relates generally to the" field. of blanket` insulation, and. in.` particular it" relatesto the method of forming enclosedblanket insulation strips, and. the` apparatus thereforl the enclosure being by paperV or` theA like material.

Amai'n object of the present-invention cosists. in. the. provisionof' a method ofi and apparatuswhereby awide. elongatedwbatt or loose uly sheet of insulating material is` successively compacted', severed.` into aplurality of'elongate'd strips,1 each of which. is thencoveiedoiione side' malfaL CVeed (in the, thel" with. enveloping sidewith enveloping, mater-m1,. theV two pieces of em'eloping material' se l Side ed'hges 0f. the. Strips, and the` Strips" severed into units of any desired length and coiled into" roll form for easier handling and packaging.

Other objectsy of the present invention will in part be pointed out specically hereinafter, and still otherswill be obvious' from the follov'ving` description of an illustrative embodiment In the drawig'sl an'nexeclly hereto and forming a part hereof,

Figure 1 is a diagrammatic side elevational^ view,` partly in section, showin'gone form' of apparatus constructedI according to and embodying my invention.

Fig. 2` is apart plan view ofthe compact'ing, slitting, and`- sealing mechanism-,and

Figs. 3 andll` are sections,.respectively; on the lines 3"--3and4L-4 ofFig. 1".

A continuous elongated web of fibrous insulating material Iii, which may be formed on conventional machinery (not shown), is moved along atop table l2 and lengthwise thereof, as by endless belt I4, and between a battery of compression rollers IS, I8, I8 mounted transversely of table l2, which reduce the originally thick, loose web to substantially uniform thickness. As seen in Fig. 1, rollers I6 and I8, I8 are so mounted as to receive the web Il! therebetween, compress same and move it along on table I2, the direction of rollers rotation being indicated by the arrows. The reduced-thickness web is then driven against a plurality of vertically-disposed, lengthwisearranged circular cutting knives 2li, 20, which divide the original web of table Width into a plurality of strips of any desired widths. according to the spacing between the knives 20, 2D on shaft 22. Three knives 20, 2U are here shown, severing web I into four strips Illa, lub, 10c, and Id, but it will be readily appreciated that fewer or more knives may be employed, and the originally wide batt reduced to any number of narrow strips.

cured together along: the

-: ofthe web, the' @Ciad towards ariel-,

Containedwithinasitabl-rceptacle l c zine 3G, disposed below sulrt table IZ, plurality off supply rolls 32, 32 of. "pinneny o suitable or desired material, the'n side the outer. side, maybe coatedL h M asphalt es may .Surely relis i?! i?? frf. vided as `there are Strips as lila; |Ub,'etc.,. form d of web llt'olbe` enveloped. 'I-wo. rolls'. 321, 32? a shown, but only for illustrativepurposesssi e with four strips:v ma' ldfflin supply "ij/9141s!l 32V would. be req-u ifred.-V Considering# the treat?-` ment ofbut'onestrip, since the others, aressi', larly handled, paper trompa supply rollr 3 L isj drawn olf andthreaded underneath I'Oc, see'Fiall'. Befrereachir "stnn [om w-fV ever', the Daher 31|,- is4 pafsdflover! el'cgticall otherwise heateddrus `3"t`^,`;3`6,lto` heatlthe lasp alii on theinner surface ofthe papiandirfender. sai ei tacky. for. more` po,s`itivf'eadl'ieijerice. to` thebot wbls't'rip' andlpaper 34E sandwilg passing between a battery of compression rollers 38, 40, 4U.

Paper strips 34 are preferably wider than the individual web strips Ilia I 0d, and; have wings 4l, 4l which extend outwardly beyond the webA on both sides thereof, see Fig. 3. At the same time, narrow lengths of tobacco cloth 42 from supply rolls 44, which may also be disposed within chamber 30, are passed over the heaters 36, 3S and onto the tacky surfaces of both of the wings 4l, 4! of sheets 34, 34. This stripping 42 of tobacco cloth, or of burlap, paper or the like, may be about one inch wide, and serves to reinforce the edges of the insulation wrapping.

Above support l2, I provide a suitable mount or support, not shown, for a number of supply rolls 46, 46 of paper or enveloping material for the top of the strips l0. As many supply Arolls 45 are provided as there are strips to be enclosed. The continuous elongated sheet 48 from rolls 46. 43 may be surfaced or otherwise treated with reflective material on its outer side, or it may be of ordinary craft material or the like. From supply rolls 46, the sheets 48 may be passed over perforating rollers 50, 50 and then under suitably located guides, as rollers 52, and directed over and atop the upper surface of the batt strips Illa, IBD, lllc, llld. Sheets 48,48 are also preferably formed of greater width than the batt strips, and have side wing extensions 58, 58 on each side thereof which overlie the wing extensions 4l, 4l of base sheet 34. Each sandwich of base sheet 34, batt strip I9, and cover sheet 48 is then passed between a pair of compression rollers 54, 56 which are spaced apart so as to receive the wings 4l, cause them to adhere on opposite sides of the intermediate strip 42 of tacky material. Asphalt or some type of quick setting adhesive is used to impart the tackiness desired. Referring to Fig. 2, it will be seen that each pair of rollers 54, 54 is mounted on a stub shaft 60 supported by a frame 62 on a shaft 64 mounted across the support I2 in bearings 65, 66 and driven by any convenient power source (not shown). sprocket wheel 68 is fixed on shaft 66 for rotation therewith, within each frame 62, which, through endless chain'll), drives a sprocket 'l2 fixed on shaft 60 to rotate rollers 54, 54 in counterclockwise direction. Shafts 60 and frames 62 can easily be interchanged when it is desired to treat batt strips of different widths.

A battery of infra-red or other heat producing lamps 14, 14 are disposed beneath and adjacent rollers 49, 46, 56 to keep these rollers warm and the tacky material sufliciently loose to insure adherence at the side wing areas.

The enclosed strips are then moved over and along a perforated steel plate 76, about six feet long, cooling as they advance, onto counterclockwise rotating rollers 78, 'le which aid in moving the strips and then onto head rollers 80, 86 which wind the elongated and enclosed strips into huge rollers. Shears 82, 82 are provided between rollers 13, 'i8 and head rollers 80, 86, which are operable automatically or in any other suitable manner to sever the batt strips into lengths of any desired footage.

With the apparatus of my invention, I am enabled to start with a single, wide, endless strip of insulating material; reduce the originally wide strip to a plurality of individual strips of any desired lesser width; handle each separate strip individually and enclose same completely and securely within paper or similar material treated 58 therebetween to 4 as desired with reflective coatings and the like; all to result in a plurality of lengths of completely enclosed insulating material.

Having described my invention, what I claim and desire to secure by Letters Patent is:

In an apparatus for continuously wrapping elongated strips of fibrous insulating material. an elongated support, drive roller means associated therewith to move an originally loose, fluffy mass of fibrous insulating material along the support, pressure roller means associated with the support to compress the mass short of the limit of compressibility thereof, continuously operating cutters also associated with the support to sever the partially compressed mass into a plurality of elongated strips as it moves along the support, guides on the support to direct the severed strips along divergent paths, a supply roll of sheet wrapping material below the support, a supply roll of sheet wrapping material above the support, the drive roller means also drawing the wrapping sheets from the supply rolls and moving same along the support with the strips disposed therebetween, and supply rolls of tacky narrow width reinforcing material also below the support, the drive rollers also drawing the reinforcing material from the supply rolls and moving same with the strips and between the wrapping sheets at the longitudinal edges thereof, and pressure rollers at both sides of the support bearing against the wrapping sheets and the interposed tacky reinforcing material along both longitudinal marginal edges of the strips whereby to enclose the strips between the wrapping sheets and tacky material.

LAWRENCE M. GILMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATESv PATENTS Number Name Date 1,874,659 Upson Aug. 30, 1932 1,890,906 Harney Dec. 13, 1932 1,901,999 Upson Mar. 2l, 1933 2,350,363 Massa June 6, 1944 2,373,500 Pearce Apr. 10, 1945 2,390,340 Webb Dec. 4, 1945 2,435,347 Gilman Feb. 3, 1948 

